What was found
SERVICE DOOR OPEN INDICATION DURING FLIGHT. PRESSURIZATION NORMAL. FLIGHT CREW PLACARDED SERVICE DOOR WARNING, MEL 52-04, AUTH 070330-B, MOC 607040. TROUBLESHOT AND R & R THE NR 2 MICROSWITCH ON THE SERVICE DOOR IAW AMM 52-74-01. OPS CHECK GOOD, MEL ITEM RESTORED.